Tokyo Electron
Alpha 8 SE D
What it is
General reference — not yet source-verifiedThe machine belongs to the class of thermal processing equipment used in front-end semiconductor fabrication. Such systems perform controlled heating of silicon wafers to achieve specific material modifications, such as dopant diffusion, oxidation, or annealing. Diffusion furnaces like this one are typically horizontal or vertical tube furnaces that hold multiple wafers in a quartz boat and expose them to precisely regulated temperatures and process gases.
How it works
General reference — not yet source-verifiedMachines of this class operate by heating wafers in a quartz or silicon carbide tube to temperatures typically ranging from several hundred to over one thousand degrees Celsius. Process gases (e.g., oxygen, nitrogen, or dopant sources) are introduced into the tube under controlled flow and pressure. The wafers are loaded via an automated handling system, and a programmable temperature profile ramps the furnace to the target temperature, holds it for a specified duration, and then cools down. The entire process is managed by a control system that ensures uniform temperature distribution across the wafer batch to achieve consistent material properties.
What do the numbers mean?
Wafer handling2
Gas & chemistry6
Optics & imaging1
Control & software5
Configuration & options13
What replaced it?
Alternatives
Tools documented as functional equivalents — same process step and wafer size, from a different manufacturer. Each equivalence cites its source.
- Hitachi Kokusai DD 823 V Vertical Diffusion— Same function class: Thermal / Diffusion, nullCompare in depthsource[1]
What does it need to run?
Site utility requirements, footprint, and infrastructure needed to install and operate this tool. Sourced from public records.
Where are the manuals?
Generated from public-source data on file. Enter your email to access — nothing is published; details are routed privately.
Not publicly documented
Field notes
No research found yet — worked with this tool? Share what you know.
Frequently asked questions
What kinds of processes can be run on this class of system?General reference — not yet source-verified
Machines of this class can perform thermal oxidation, diffusion, annealing, and low-pressure chemical vapor deposition, depending on the gas supply and system configuration.
What process parameters are most important for this equipment class?General reference — not yet source-verified
Temperature uniformity, temperature ramp rates, process pressure, gas flow composition, and gas flow sequencing are the key parameters that determine process results.
Why are vertical thermal systems common in semiconductor manufacturing?General reference — not yet source-verified
The vertical orientation helps reduce gravity-driven particle contamination on wafer surfaces and allows for uniform temperature control around the wafer load.
What maintenance considerations apply to vertical thermal furnaces?General reference — not yet source-verified
The heated process tube, wafer boat, and related quartzware require regular cleaning and occasional replacement, and systems are periodically conditioned to maintain stable and repeatable process conditions.
Not publicly documented
The following facts about the Alpha 8 SE D are absent from this record as of this revision. First-hand knowledge or a citation closes a gap; every submission is reviewed before publication.
No publicly documented production dates or lifecycle milestones (introduction, end of production, EOL) for the Alpha 8 SE D are on record.
Answerable by: OEM historical records or a trade-press announcement
No publicly documented variants, configuration options, or revision breakpoints of the Alpha 8 SE D are on record.
Answerable by: an OEM product catalog or an engineer who ordered or specified the tool
The control-system platform and OS era of the Alpha 8 SE D are not on record.
Answerable by: an engineer who operated it or OEM installation records
No publicly documented failure modes or field errata for the Alpha 8 SE D are on record.
Answerable by: a field service engineer, process engineer, or maintenance technician
The process node or technology generation of the Alpha 8 SE D is not on record.
Answerable by: an OEM datasheet or a fab qualification report
No research found yet — worked with this tool? Share what you know.
Sources & citations
Sources (2)Every fact above is drawn from these public sources
- [1]Inventory photo
- [2]inventory listing
Last updated Oct 11, 2026.
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